How do I change the plus to a negative in a column of numbers?

J

JKB

I wish to change the polarity of all the numbers in a column from positive to
negative.
 
B

bj

enter -1 in a cell and copy
select your column
use autofilter to get non blanks
select your column again and
paste special multiply
 
A

Arvi Laanemets

Hi

When originally all values are positive:
Enter -1 into some free cell, and copy the cell.
Select the column (or range with data), and then PasteSpecial vrom menu or
right-click dropdown - check Multiply and click on OK.

When there are negative values:
Select column (or range with data).
Replace all "-" with nothing.
Continue as above.
 
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